package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.controller.notify.PayNotifyController;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.AddressBookService;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    private static Long orderid;
    private static String ordersNumber;
    @Autowired
    private OrderService orderService;
    @Autowired
    private WebSocketServer webSocketServer;



    @Transactional
    @Override
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        //处理各种业务异常(地址簿为空，购物车数据为空)
        AddressBook addressbook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressbook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(ordersSubmitDTO,shoppingCart);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list.isEmpty()){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //向订单表插入一条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setConsignee(addressbook.getConsignee());
        orders.setAddress(addressbook.getDetail());
        orders.setPhone(addressbook.getPhone());
        orders.setUserId(userId);

        orderMapper.insert(orders);

        orderid = orders.getId();
        ordersNumber = orders.getNumber();

        //向订单明细表插入n条数据
        List<OrderDetail> orderDetails = new ArrayList<>();
        for (ShoppingCart cart : list){
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetails.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetails);

        //清空当前购物车数据
        shoppingCartMapper.deleteByUserId(userId);

        //封装VO数据返回结果
        OrderSubmitVO submitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();
        return submitVO;
    }

    /**

     * 订单支付

     *

     * @param ordersPaymentDTO

     * @return

     */

    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);
        //调用微信支付接口，生成预支付交易单

//    JSONObject jsonObject = weChatPayUtil.pay(

//        ordersPaymentDTO.getOrderNumber(), //商户订单号

//        new BigDecimal(0.01), //支付金额，单位 元
//        "苍穹外卖订单", //商品描述
//        user.getOpenid() //微信用户的openid
//    );
//
//    if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//  throw new OrderBusinessException("该订单已支付");
//    }
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("code", "ORDERPAID");
//
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));
        //为替代微信支付成功后的数据库订单状态更新，多定义一个方法进行修改
        Integer OrderPaidStatus = Orders.PAID; //支付状态，已支付
        Integer OrderStatus = Orders.TO_BE_CONFIRMED;  //订单状态，待接单
        //发现没有将支付时间 check_out属性赋值，所以在这里更新
        LocalDateTime check_out_time = LocalDateTime.now();
        orderMapper.updateStatus(OrderStatus, OrderPaidStatus, check_out_time, orderid);

        //由于个人未开发微信支付，所以这里模拟微信支付成功后，修改订单状态
        orderService.paySuccess(ordersNumber);

        return vo;

    }
    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();
    //通过websocket向客户最润览器推送消息type,orderId下content
        orderMapper.update(orders);
        Map map = new HashMap<>();
        map.put("type", 1);
        map.put("orderId", ordersDB.getId());
        map.put("content", "订单号:" + outTradeNo);
        String msg = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(msg);
    }

    /**
     * 历史订单查询
     *
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult getHistoryOrders(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        Page<Orders> orders = orderMapper.getHistoryOrdersList(ordersPageQueryDTO);

        List<OrderVO> list = new ArrayList<>();
        if (orders != null && orders.getTotal() > 0) {
            for (Orders order : orders){
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(order.getId());
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(order,orderVO);
                orderVO.setOrderDetailList(orderDetailList);

                list.add(orderVO);
            }
        }
        return new PageResult(orders.getTotal(),list);
    }

    @Override
    public OrderVO getOrderDetailByOrderId(Long id) {
        Orders orders = orderMapper.getById(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);

        List<OrderDetail> list = orderDetailMapper.getByOrderId(id);
        orderVO.setOrderDetailList(list);
        return orderVO;
    }
    /**
     * 用户取消订单
     *
     * @param id
     */
    @Override
    public void userCancelOrder(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
//        // 订单处于待接单状态下取消，需要进行退款
//        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
//            //调用微信支付退款接口
//            weChatPayUtil.refund(
//                    ordersDB.getNumber(), //商户订单号
//                    ordersDB.getNumber(), //商户退款单号
//                    new BigDecimal(0.01),//退款金额，单位 元
//                    new BigDecimal(0.01));//原订单金额
//            //支付状态修改为 退款
//            orders.setPayStatus(Orders.REFUND);
//        }
        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 再来一单
     *
     * @param id
     */
    @Override
    public void repetition(Long id) {
        //根据订单id查询菜品id或者套餐id
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        for (OrderDetail orderDetail : orderDetailList) {
            ShoppingCart shoppingCart = new ShoppingCart();
            shoppingCart.setUserId(BaseContext.getCurrentId());
            shoppingCart.setDishId(orderDetail.getDishId());
            shoppingCart.setSetmealId(orderDetail.getSetmealId());
            shoppingCart.setNumber(orderDetail.getNumber());
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCart.setDishFlavor(orderDetail.getDishFlavor());
            shoppingCart.setImage(orderDetail.getImage());
            shoppingCart.setName(orderDetail.getName());
            shoppingCart.setAmount(orderDetail.getAmount());
            shoppingCart.setUserId(BaseContext.getCurrentId());
            shoppingCartMapper.insert(shoppingCart);
        }
    }
    /**
     * 条件搜索订单
     *
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> orders = orderMapper.getHistoryOrdersList(ordersPageQueryDTO);
        return new PageResult(orders.getTotal(),orders.getResult());
    }

    /**
     * 统计订单数量
     *
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);


        return OrderStatisticsVO.builder()
                .confirmed(confirmed)
                .deliveryInProgress(deliveryInProgress)
                .toBeConfirmed(toBeConfirmed)
                .build();
    }

    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                        .id(ordersConfirmDTO.getId())
                        .status(Orders.CONFIRMED)
                        .build();
        orderMapper.update(orders);
    }

    @Override
    public  void rejectionOrder(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());

        // 订单只有存在且状态为2（待接单）才可以拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //由于个人为开通支付，暂时注释掉
//        //支付状态
//        Integer payStatus = ordersDB.getPayStatus();
//        if (payStatus == Orders.PAID) {
//            //用户已支付，需要退款
//            String refund = weChatPayUtil.refund(
//                    ordersDB.getNumber(),
//                    ordersDB.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//            log.info("申请退款：{}", refund);
//        }

        // 拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    @Override
    public void adminCancelOrder(OrdersCancelDTO ordersCancelDTO) {
        // 由于个人为开通支付，暂时注释掉
//        // 根据id查询订单
//        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());
//
//        //支付状态
//        Integer payStatus = ordersDB.getPayStatus();
//        if (payStatus == 1) {
//            //用户已支付，需要退款
//            String refund = weChatPayUtil.refund(
//                    ordersDB.getNumber(),
//                    ordersDB.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//            log.info("申请退款：{}", refund);
//        }
        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void delivery(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);
        // 校验订单是否存在，并且状态为3
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.update(orders);
    }

    @Override
    /**
     * 完成订单
     *
     * @param id
     */
    public void complete(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);
        // 校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void reminder(Long id) {
        Orders ordersDB = orderMapper.getById(id);
        if (ordersDB == null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        Map map = new HashMap<>();
        map.put("type", 2);
        map.put("orderId", ordersDB.getId());
        map.put("content", "订单号：" + ordersDB.getNumber());
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }
}
